AVR-Chat

THANK YOU GUYS!

   I checked parts that you suggested but what I want to do is to 
use the full bandwidth of USB. The chips you proposed are actually 
emulating USB, LINX is good but 3MBit is far too slow for me.
I was thinking rather of 12MBit (Full-speed USB), if I want to send 
data form my device to PC in real time I need fast transmission 
without any proxy overhead. It is still question to me how do I 
communicate with USB devices under windows? I was browsing 
Microsoft's MSDN library but found no API functions for this. I read 
that there are no universal api functions as there is no strict 
classification of USB devices for whom the functions could have been 
written (except HID device).
So it looks like I have to write my own driver for my device or buy 
ready-made modules you mentioned before.
I would be thankful for any suggestions or hints as this topic is 
very interesting to me.
Thanks in advance
Tomek